Add a new sending domain to a tenant. Returns DNS records that must be configured before the domain can be verified.
Each tenant gets their own isolated mail server for domain isolation.
Required DNS records:
After adding DNS records, call POST /tenants/{tenantId}/domains/{domainId}/verify to verify.
Use your API key from arkhq.io/org/credentials
Authorization: Bearer YOUR_API_KEYThe tenant ID
Domain name (e.g., "mail.example.com")
1"mail.mycompany.com"